B.6 SWm Interface

29.2733GPP3GPP EPS AAA interfacesEvolved Packet System (EPS)Release 18TS

B.6.1 General

The Diameter overload control mechanism is an optional feature over the SWm interface.

It is recommended to make use of the IETF RFC 7683 [47] over the SWm interface where, when applied, the ePDG shall behave as a reacting node and the 3GPP AAA server as a reporting node.

B.6.2 3GPP AAA server behaviour

The 3GPP AAA server behaviour is the same as described in clause B.3.2 for STa by replacing

– trusted non 3GPP access network by ePDG;

– STa by SWm.

B.6.3 ePDG behaviour

The ePDG behaviour is the same as described in clause B.3.3 for STa by replacing:

– trusted non 3GPP access network by ePDG;

– STa by SWm.

Annex C gives guidance on message prioritisation over the SWm interface.

Annex C (Informative):
Diameter overload control node behaviour